[Letux-kernel] [PATCHv2] i2c: omap: Use noirq system sleep pm ops to idle device for suspend

Andreas Kemnade andreas at kemnade.info
Thu Feb 21 23:36:49 CET 2019


On Thu, 21 Feb 2019 14:25:32 -0800
Tony Lindgren <tony at atomide.com> wrote:

> * Andreas Kemnade <andreas at kemnade.info> [190221 22:14]:
> > On Thu, 21 Feb 2019 13:41:57 -0800
> > Tony Lindgren <tony at atomide.com> wrote:  
> > > I tried with just plain omap2plus_defconfig, do you have maybe
> > > something extra enabled that I don't?
> > >   
> > A quick guess:
> > CONFIG_PREEMPT=y  
> 
> Hmm I just tried adding that and it still works here.
> 
> > my config:
> > https://misc.andi.de1.cc/mydef
> > 
> > omap2plus_defconfig works here also. Now I need some sleep.  
> 
> Maybe you have a USB cable connected and the USB PHY is
> producing interrupts on resume? My test devices are in a
> rack so it's a bit hard for me to quickly test that.
> 
usb irqs would not explain why waking up via other pinctrl does not
cause these problems. phy modules are not loaded.

So, now really brain sleep time here, hopefully a resume with fresh
ideas.


Regards,
Andreas
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